42452978234 has 4 divisors (see below), whose sum is σ = 63679467354. Its totient is φ = 21226489116.

The previous prime is 42452978129. The next prime is 42452978257. The reversal of 42452978234 is 43287925424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37863322225 + 4589656009 = 194585^2 + 67747^2 .

It is a super-3 number, since 3×42452978234³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10613244557 + ... + 10613244560.

Almost surely, 2^42452978234 is an apocalyptic number.

42452978234 is a deficient number, since it is larger than the sum of its proper divisors (21226489120).

42452978234 is a wasteful number, since it uses less digits than its factorization.

42452978234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21226489119.

The product of its digits is 3870720, while the sum is 50.

The spelling of 42452978234 in words is "forty-two billion, four hundred fifty-two million, nine hundred seventy-eight thousand, two hundred thirty-four".